ANALYSIS OF DRILLING HOLE DEVIATION IN CRUSTAL STRESS MEASUREMENT
Cheng Huihong 1,2) ; Zhang Huai 1,2) ; Zhu Bojing 1,2) ; and Shi Yaolin 1,2)
1)Key Laboratory of Computational Geodynamics, Chinese Academy of Science, Beijing 100049; 2)College of Earth Science, Gradute University of Chinese Academy of Sciences, Beijing 100049
Abstract The drillinghole deviation problem is explored through theoretical and numerical analysis.First,the finite element modeling to different deviation(zero to half of hole radium) established and relatively dispalcement fields are obtained.Then,the correlation of deviation value and mean diaplacement error(MDE) is developed.When the deviation is located at 0.2 level,the MDE components at radical and circumferential direction is less than 15% and 10% respectively,when it is located at 0.4 level,the relatively error will exceed to 30% and 25%,if it is exceed to 0.5 level,the present law is invalidated and had to be improved.
Key words ：
crustal stress
eccentric derivation
radial displacement
tangential displacements
error analysis
Received: 01 January 1900
Corresponding Authors:
Cheng Huihong
Cite this article:
Cheng Huihong,Zhang Huai,Zhu Bojing et al. ANALYSIS OF DRILLING HOLE DEVIATION IN CRUSTAL STRESS MEASUREMENT[J]. , 2011, 31(6): 164-169.
Cheng Huihong,Zhang Huai,Zhu Bojing et al. ANALYSIS OF DRILLING HOLE DEVIATION IN CRUSTAL STRESS MEASUREMENT[J]. jgg, 2011, 31(6): 164-169.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2011/V31/I6/164
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